Jamie Oliver's Italian Potatoes with Balsamic

1. Maris Piper potatoes.
2. Boil them until half-cooked, cut into wedges/coins.
3. In a roasting tray pour olive oil and butter.
4. Break up a whole unpeeled head of garlic.
5. Add 6 sprigs of fresh thyme.
6. Add the potatoes and a few onions coarsely cut, and sprinkle with about 200 ml balsamic vinegar.
7. Use the big red tray.

180°C — 1 hour and 20 minutes.